The average age at which people begin to need eyeglasses vary considerably.A、var

游客2024-01-01 36

问题 The average age at which people begin to need eyeglasses vary considerably.

选项 A、varies
B、is varied
C、will vary
D、has been varied

答案 A

解析结构应用主句主语为the average age，是单数，应用一般现在时的第三人称单数形式，因此A为答案。

转载请注明原文地址:http://tihaiku.com/zcyy/3324867.html

相关试题推荐

随机试题

最新回复(0)

Therearealsopeoplewhoobjecttofairytalesonthegroundsthattheyarenot